Changed access modified indentation

src/components/heartrate/Ppg.h

@@ -7,7 +7,7 @@
 namespace Pinetime {
   namespace Controllers {
     class Ppg {
-        public:
+    public:
       explicit Ppg(float spl);
 
       int Preprocess(float spl);
@@ -16,7 +16,7 @@ namespace Pinetime {
       void SetOffset(uint16_t i);
       void Reset();
 
-        private:
+    private:
       std::array<int, 200> data;
       size_t dataIndex = 0;
       float offset;